Unlike the process for changing voice in an Echo device, the process for changing the Alexa voice through the Android or iOS application is a bit lengthy. Here is a step-by-step guide for the same.
Step 1: Open the Alexa application on your smartphone.
Step 2: When the app opens, tap on the “Devices” tab at the bottom and then tap on the “Echo & Alexa” button in the top-left.
Step 3: Now, select the device for which you want to change Alexa’s voice.
Step 4: In the next screen, select the “Settings” icon in the top-right corner.
Step 5: Now, scroll down to the options for Alexa’s Voice and from there, choose the voice you want to use — either Original or New.
Do note that changing the voice only applies to the Echo device you are using at the time and if you have multiple devices and want to change the voice on each one of them, then you will need to follow the same process for every device separately.